Measuring and testing – Liquid level or depth gauge
Patent
1981-01-06
1983-05-17
Kazenske, Edward R.
Measuring and testing
Liquid level or depth gauge
G01F 2328
Patent
active
043834434
ABSTRACT:
A liquid-level measuring device including, in effect, two similar elongate members each adapted to be partially submerged in a liquid, the two elongate members being displaced lengthwise relative to one another by an odd number of quarter wavelengths of a predetermined wavelength of a chosen flexurally resonant mode of the elongate members. Each elongate member has flexure wave transmitting elements in contact therewith for launching flexure waves along the member and flexure wave receiving elements in contact with the member for receiving flexure waves launched by the transmitting elements. Also, associated with each elongate member is a phase detection arrangement connected both to the transmitting elements and to the receiving elements for detecting and comparing the phase of the flexure waves at the transmitting elements with the phase at the receiving elements so as to obtain a phase difference measurement, the magnitude of which provides an indication of the resonance frequency of the elongate member. An operating unit is connected to the respective outputs of the two phase detection arrangements so as to provide an indication of the extent to which the elongate members are immersed in the liquid.
REFERENCES:
patent: 3080752 (1963-03-01), Rich
patent: 3133442 (1964-05-01), Werner
patent: 3229523 (1966-01-01), Boyd et al.
patent: 4213337 (1980-07-01), Langdon
Kazenske Edward R.
Roskos Joseph W.
The Marconi Company Limited
LandOfFree
Liquid-level measurement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid-level measurement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid-level measurement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1562013